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https://www.readbyqxmd.com/read/28322333/squamous-epitheliotropism-of-enterovirus-a71-in-human-epidermis-and-oral-mucosa
#1
Win Kyaw Phyu, Kien Chai Ong, Chee Kwan Kong, Abdul Khalil Alizan, Tindivanam Muthurangam Ramanujam, Kum Thong Wong
Hand-foot-and-mouth disease is a self-limiting paediatric infectious disease commonly caused by Enterovirus A71 (Genus: Enterovirus, Family: Picornaviridae). Typical lesions in and around the hands, feet, oral cavity and other places may rarely be complicated by acute flaccid paralysis and acute encephalomyelitis. Although virus is readily cultured from skin vesicles and oral secretions, the cellular target/s of Enterovirus A71 in human skin and oral mucosa are unknown. In Enterovirus A71-infected human skin and oral mucosa organotypic cultures derived from the prepuce and lip biopsies, focal viral antigens and viral RNA were localized to cytoplasm of epidermal and mucosal squamous cells as early as 2 days post-infection...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302925/best-practices-to-prevent-transmission-and-control-outbreaks-of-hand-foot-and-mouth-disease-in-childcare-facilities-a-systematic-review
#2
REVIEW
J Hy Chan, C K Law, E Hamblion, H Fung, J Rudge
INTRODUCTION: Hand, foot, and mouth disease continues to cause seasonal epidemics in the Asia-Pacific Region. Since the current Enterovirus 71 vaccines do not provide cross-protection for all Enterovirus species that cause hand, foot, and mouth disease, there is an urgent need to identify appropriate detection tools and best practice to prevent its transmission and to effectively control its outbreaks. This systematic review aimed to identify characteristics of outbreak and assess the impact and effectiveness of detection tools and public health preventive measures to interrupt transmission...
March 17, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28274636/enhancing-enterovirus-a71-vaccine-production-yield-by-microcarrier-profusion-bioreactor-culture
#3
Chia-Chyi Liu, Suh-Chin Wu, Shang-Rung Wu, Hsiao-Yu Lin, Meng-Shin Guo, Alan Yung-Chih Hu, Yen-Hung Chow, Jen-Ron Chiang, Dar-Bin Shieh, Pele Chong
Hand, foot and mouth diseases (HFMD) are mainly caused by Enterovirus A71 (EV-A71) infections. Clinical trials in Asia conducted with formalin-inactivated EV-A71 vaccine candidates produced from serum-free Vero cell culture using either roller bottle or cell factory technology, are found to be safe and highly efficacious. To increase vaccine yields and reduce the production costs, the bioprocess improvement for EV-A71 vaccine manufacturing is currently being investigated. The parameters that could affect and enhance the production yields of EV-A71 virus growth in the microcarrier bioreactor were investigated...
March 6, 2017: Vaccine
https://www.readbyqxmd.com/read/28250116/a-neonatal-murine-model-of-coxsackievirus-a6-infection-for-evaluation-of-antiviral-and-vaccine-efficacy
#4
Zhenjie Zhang, Zhaopeng Dong, Qingjuan Wei, Michael J Carr, Juan Li, Shujun Ding, Yigang Tong, Dong Li, Weifeng Shi
Hand, foot and mouth disease (HFMD) is a global health concern. Family Picornaviridae members, particularly enterovirus 71 (EVA71) and Coxsackievirus A16 (CVA16), are the primary etiological agents of HFMD, however, a third enterovirus A species, CoxsackievirusA6 (CVA6), has been recently associated with epidemic outbreaks. Study of the pathogenesis of CVA6 infection and development of antivirals and vaccines are hindered due to the lack of appropriate animal models. We have developed and characterized a murine model of CVA6 infection which was employed to evaluate the antiviral activities of different drugs and the protective efficacies of CVA6-inactivated vaccines...
March 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28247832/-a-child-with-a-fever-and-rash
#5
B Herwegen, R Frank
A 1-year-old boy with flu-like symptoms and red papules, vesicles and macules around the mouth, on the extremities, on the palms of his hands and soles of the feet was seen at the outpatient clinic. He was diagnosed with an atypical form of hand, foot, and mouth disease, which can present itself in various forms.
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28246241/onychomadesis-after-hand-foot-and-mouth-disease
#6
Xue-Ling Gan, Tang-de Zhang
No abstract text is available yet for this article.
February 21, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28245896/an-improved-barcoded-oligonucleotide-primers-based-next-generation-sequencing-approach-for-direct-identification-of-viral-pathogens-in-clinical-specimens
#7
Chun Hua Wang, Kai Nie, Yi Zhang, Ji Wang, Shuai Feng Zhou, Xin Na Li, Hang Yu Zhou, Shun Xiang Qi, Xue Jun Ma
OBJECTIVE: To provide a feasible and cost-effective next-generation sequencing (NGS) method for accurate identification of viral pathogens in clinical specimens, because enormous limitations impede the clinical use of common NGS, such as high cost, complicated procedures, tremendous data analysis, and high background noise in clinical samples. METHODS: Viruses from cell culture materials or clinical specimens were identified following an improved NGS procedure: reduction of background noise by sample preprocessing, viral enrichment by barcoded oligonucleotide (random hexamer or non-ribosomal hexanucleotide) primer-based amplification, fragmentation-free library construction and sequencing of one-tube mixtures, as well as rapid data analysis using an in-house pipeline...
January 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28236071/recombinant-heat-shock-protein-78-enhances-enterovirus-71-propagation-in-vero-cells-and-is-induced-in-sk-n-sh-cells-during-the-infection
#8
Bing Zhu, Tiantian Xu, Zhengfang Lin, Changbing Wang, Yinghua Li, Mingqi Zhao, Liang Hua, Misi Xiao, Ning Deng
Enterovirus 71 (EV71) is one of the major causative agents of hand, foot and mouth disease (HFMD), which mainly occurs in children. Children with EV71 infection can develop severe neurological diseases. Heat shock protein 78 (HSP78) facilitates proper protein folding during viral propagation and is induced during virus infection. Nevertheless, the role that HSP78 plays during EV71 infection is still unclear. In this study, recombinant HSP78 protein was expressed in a prokaryotic expression system and used for exploring the interaction between HSP78 and EV71 propagation...
February 24, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28229467/characterization-of-genome-sequences-and-clinical-features-of-coxsackievirus-a6-strains-collected-in-hyogo-japan-in-1999-2013
#9
Miki Ogi, Yoshihiko Yano, Masatsugu Chikahira, Denshi Takai, Tomohiro Oshibe, Takeshi Arashiro, Nozomu Hanaoka, Tsuguto Fujimoto, Yoshitake Hayashi
Coxsackievirus A6 (CV-A6) is an enterovirus, which is known to cause herpangina. However, since 2009 it has frequently been isolated from children with hand, foot and mouth disease (HFMD). In Japan, CV-A6 has been linked to HFMD outbreaks in 2011 and 2013. In this study, the full-length genome sequencing of CV-A6 strains were analyzed to identify the association with clinical manifestations. 5612 children with suspected enterovirus infection (0-17 years old) between 1999 and 2013 in Hyogo Prefecture, Japan, were enrolled...
February 22, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28222831/tracking-and-predicting-hand-foot-and-mouth-disease-hfmd-epidemics-in-china-by-baidu-queries
#10
Q Y Xiao, H J Liu, M W Feldman
Hand, foot, and mouth disease (HFMD) is highly prevalent in China, and more efficient methods of epidemic detection and early warning need to be developed to augment traditional surveillance systems. In this paper, a method that uses Baidu search queries to track and predict HFMD epidemics is presented, and the outbreaks of HFMD in China during the 60-month period from January 2011 to December 2015 are predicted. The Pearson correlation coefficient (R) of the predictive model and the mean absolute percentage errors between observed HFMD case counts and the predicted number show that our predictive model gives excellent fit to the data...
February 22, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28220872/human-enterovirus-71-protein-interaction-network-prompts-antiviral-drug-repositioning
#11
Lu Han, Kang Li, Chaozhi Jin, Jian Wang, Qingjun Li, Qiling Zhang, Qiyue Cheng, Jing Yang, Xiaochen Bo, Shengqi Wang
As a predominant cause of human hand, foot, and mouth disease, enterovirus 71 (EV71) infection may lead to serious diseases and result in severe consequences that threaten public health and cause widespread panic. Although the systematic identification of physical interactions between viral proteins and host proteins provides initial information for the recognition of the cellular mechanism involved in viral infection and the development of new therapies, EV71-host protein interactions have not been explored...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28217559/a-novel-enterovirus-71-ev71-virulence-determinant-the-69th-residue-of-3c-protease-modulates-pathogenicity
#12
Bingqing Li, Yingying Yue, Yajie Zhang, Zenglin Yuan, Peng Li, Nannan Song, Wei Lin, Yan Liu, Lichuan Gu, Hong Meng
Human enterovirus type 71 (EV71), the major causative agent of hand-foot-and-mouth disease, has been known to cause fatal neurological complications. Unfortunately, the reason for neurological complications that have been seen in fatal cases of the disease and the relationship between EV71 virulence and viral genetic sequences remains largely undefined. The 3C protease (3C(pro)) of EV71 plays an irreplaceable role in segmenting the precursor polyprotein during viral replication, and intervening with host life activity during viral infection...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28207011/shedding-light-on-onychomadesis
#13
Fernanda Salgado, Marc Z Handler, Robert A Schwartz
Onychomadesis is the proximal separation of the nail plate from the nail matrix due to a temporary cessation of nail growth. It can occur in children of all ages including neonates. Diagnosis is made clinically through palpation and inspection of the nail plate. Physicians should consider underlying associations. A review of the patient's history for any viral illnesses 1 to 2 months prior to nail changes often will help identify the causative disease. Onychomadesis typically is mild and self-limited. There is no specific treatment, but a conservative approach to management is recommended with treatment of any underlying causes and supportive care...
January 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28202117/-value-of-serum-s100b-protein-and-neuron-specific-enolase-levels-in-predicting-the-severity-of-hand-foot-and-mouth-disease
#14
Jing Li, Rui-Hai Liu, Ruo-Bing Shan
OBJECTIVE: To study the value of serum S100B protein and neuron-specific enolase (NSE) levels in predicting the severity of hand, foot and mouth disease (HFMD). METHODS: Ninety children with HFMD were classified into three groups: common type, severe type, and critical type (n=30 each). Thirty healthy children were randomly selected as the control group. ELISA was used to measure serum levels of S100B protein and NSE before and at 7 days after treatment. The receiver operating characteristic (ROC) curve was used to evaluate the prediction efficiency of S100B protein and NSE for the severity of HFMD...
February 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28198671/transcriptome-analysis-reveals-dynamic-changes-in-coxsackievirus-a16-infected-hek-293t-cells
#15
Jun Jin, Rujiao Li, Chunlai Jiang, Ruosi Zhang, Xiaomeng Ge, Fang Liang, Xin Sheng, Wenwen Dai, Meili Chen, Jiayan Wu, Jingfa Xiao, Weiheng Su
BACKGROUND: Coxsackievirus A16 (CVA16) and enterovirus 71 (EV71) are two of the major causes of hand, foot and mouth disease (HFMD) world-wide. Although many studies have focused on infection and pathogenic mechanisms, the transcriptome profile of the host cell upon CVA16 infection is still largely unknown. RESULTS: In this study, we compared the mRNA and miRNA expression profiles of human embryonic kidney 293T cells infected and non-infected with CVA16. We highlighted that the transcription of SCARB2, a cellular receptor for both CVA16 and EV71, was up-regulated by nearly 10-fold in infected cells compared to non-infected cells...
January 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28196318/common-skin-conditions-in-children-skin-infections
#16
Brian Z Rayala, Dean S Morrell
Skin infections account for a significant subset of dermatologic conditions of childhood. Common cutaneous viral infections in children include warts, molluscum contagiosum, hand-foot-and-mouth disease, and herpes simplex. Although viral infections are self-limited and often only mildly symptomatic, they can cause anxiety, embarrassment, and health care use. Recognition of their common and atypical presentations is necessary to differentiate them from other skin conditions of similar morphology. Impetigo, cellulitis, and abscess comprise the majority of childhood bacterial skin infections and are treated with topical or systemic antibiotics that cover group A Streptococcus and Staphylococcus aureus...
February 2017: FP Essentials
https://www.readbyqxmd.com/read/28188360/seasonal-modeling-of-hand-foot-and-mouth-disease-as-a-function-of-meteorological-variations-in-chongqing-china
#17
Pin Wang, Han Zhao, Fangxin You, Hailong Zhou, William B Goggins
Hand, foot, and mouth disease (HFMD) is an enterovirus-induced infectious disease, mainly affecting children under 5 years old. Outbreaks of HFMD in recent years indicate the disease interacts with both the weather and season. This study aimed to investigate the seasonal association between HFMD and weather variation in Chongqing, China. Generalized additive models and distributed lag non-linear models based on a maximum lag of 14 days, with negative binomial distribution assumed to account for overdispersion, were constructed to model the association between reporting HFMD cases from 2009 to 2014 and daily mean temperature, relative humidity, total rainfall and sun duration, adjusting for trend, season, and day of the week...
February 10, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28179628/the-impact-of-hand-foot-and-mouth-disease-control-policies-in-singapore-a-qualitative-analysis-of-public-perceptions
#18
Karen Siegel, Alex R Cook, Hanh La
Hand foot and mouth disease (HFMD) is a widespread pediatric disease in Asia. Most cases are relatively mild and caused by Coxsackie viruses, but in epidemics caused by Enterovirus 71, severe complications can occur. In response to the deaths of dozens of children in a 1997 outbreak (Podin in BMC Public Health 6:180,1 Abubakar in Virus Res 61(1):1-9,2 WHO in3), Singapore practices childcare centre surveillance, case-isolation, and short-term closure of centres. We conducted 44 in-depth interviews with teachers, principals, and parents at four childcare centres in Singapore to better understand experiences with current control policies...
February 8, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28176160/a-novel-enterovirus-96-circulating-in-china-causes-hand-foot-and-mouth-disease
#19
Yi Xu, Yisuo Sun, Jinmin Ma, Shuru Zhou, Wei Fang, Jiawei Ye, Limei Tan, Jingkai Ji, Dan Luo, Liqiang Li, Jiandong Li, Chunxiao Fang, Na Pei, Shuo Shi, Xin Liu, Hui Jiang, Sitang Gong, Xun Xu
Enterovirus 96 (EV-96) is a recently described member of the species Enterovirus C and is associated with paralysis and myelitis. In this study, using metagenomic sequencing, we identified a new enterovirus 96 strain (EV-96-SZ/GD/CHN/2014) as the sole pathogen causing hand, foot, and mouth disease (HFMD). A genomic comparison showed that EV-96-SZ/GD/CHN/2014 is most similar to the EV-96-05517 strain (85% identity), which has also been detected in Guangdong Province. This is the first time that metagenomic sequencing has been used to identify an EV-96 strain shown to be associated with HFMD...
February 7, 2017: Virus Genes
https://www.readbyqxmd.com/read/28168168/enterovirus-71-infection-and-vaccines
#20
REVIEW
Eun-Je Yi, Yun-Ju Shin, Jeong-Hwan Kim, Tae-Gyun Kim, Sun-Young Chang
Hand, foot and mouth disease (HFMD) is a highly contagious viral infection affecting young children during the spring to fall seasons. Recently, serious outbreaks of HFMD were reported frequently in the Asia-Pacific region, including China and Korea. The symptoms of HFMD are usually mild, comprising fever, loss of appetite, and a rash with blisters, which do not need specific treatment. However, there are uncommon neurological or cardiac complications such as meningitis and acute flaccid paralysis that can be fatal...
January 2017: Clinical and Experimental Vaccine Research
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